Safety pillars are supported by a support device.

Abstract

This utility model belongs to the field of mineral mining technology, specifically disclosing a support device for safe pillar recovery, including a base and a support assembly. An adjusting plate is installed on the base via a support member, and the adjusting plate is provided with multiple adjusting holes. Adjusting rods are threadedly connected to the adjusting holes. The support assembly includes a support cylinder for sleeved on the adjusting rod and a support rod for inserted into the support cylinder. A limiting plate is fixedly connected inside the support cylinder. The upper end of the adjusting rod abuts against the limiting plate, and a limiting ring is fixedly connected to the support rod. The limiting ring is operable to abut against the end of the support cylinder, thereby providing support. The threaded adjustment rod enables precise adjustment of the support height. The insertion design of the support cylinder and the support rod allows for quick adjustment of the support length. The cooperation between the limiting plate and the limiting ring effectively prevents the support assembly from slipping, ensuring stable transmission of support force during pillar recovery.

Description

Technical Field

[0001] This utility model belongs to the field of mineral mining technology, specifically relating to a support device for the safe return of mine pillars. Background Technology

[0002] Safety pillars are critical structures used in mining to maintain the structural stability of goaf areas and prevent surrounding rock collapse. During the mining process, temporary support devices are needed to support the pillars and surrounding rock mass to ensure operational safety. Existing support devices mostly employ fixed or simple adjustable structures, which generally suffer from low adjustment accuracy and poor support stability. On the one hand, the mine roof often exhibits irregular undulations due to varying geological conditions, making it difficult for traditional devices to quickly adapt to different support point height differences. On the other hand, the mine environment experiences frequent vibrations, and support components are prone to loosening due to load changes or mechanical vibrations, leading to failure in the transmission of support force and posing safety hazards. Utility Model Content

[0003] To address the problems of complex adjustment and operation, insufficient support stability, and inability to adapt to uneven mine roofs in existing safety pillar recovery support devices, a new safety pillar recovery support device is proposed. This utility model provides the following technical solution:

[0004] A safety pillar recovery support device includes a base and a support assembly. An adjusting plate is mounted on the base via a support member. The adjusting plate has multiple adjusting holes, and adjusting rods are threaded into the adjusting holes. The support assembly includes a support cylinder for sleeved on the adjusting rods and a support rod for inserted into the support cylinder. A limiting plate is fixedly connected inside the support cylinder. The upper end of the adjusting rod abuts against the limiting plate. A limiting ring is fixedly connected to the support rod, and the limiting ring is operably abuts against the end of the support cylinder.

[0005] Preferably, the support rod is operable to abut against the limiting plate.

[0006] Preferably, an adjusting block is fixedly connected to the bottom end of the adjusting rod, and the adjusting block is hexagonal prism shaped.

[0007] Preferably, the adjusting block has a horizontally penetrating pin hole.

[0008] Preferably, clamps are fitted onto each support cylinder at the same height.

[0009] Preferably, the inner side of the clamp is provided with an inner support plate at intervals, and the inner support plate abuts against the inner side of each support cylinder at the same height.

[0010] Preferably, the adjusting plate is provided with a mounting rod, and the inner support plate is provided with a mounting hole in the middle, and the inner support plate is sleeved on the outside of the mounting rod through the mounting hole.

[0011] Preferably, the clamp is provided with a first threaded hole, and the inner support plate is provided with a second threaded hole, wherein the first threaded hole and the second threaded hole are threadedly connected with set bolts for fastening the support cylinder.

[0012] Preferably, a fixing rod is fixedly connected to the adjusting plate, and a mounting rod is inserted into the upper side of the fixing rod.

[0013] Preferably, there are 3 or 4 adjusting rods evenly arranged around the mounting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By combining support rods and support cylinders, it can adapt to the height difference of different support points caused by the unevenness of the mine roof. It can achieve coarse adjustment, and then fine adjustment can be made through each adjustment rod until each support component is in contact with the mine roof.

[0016] 2. The hexagonal prism-shaped adjustment block can be matched with a standard wrench, allowing for quick and easy height adjustments by rotating the adjustment rod without the need for special tools. At the same time, the anti-slip properties of the hexagonal prism structure effectively prevent hand slippage during adjustment, improving ease of operation and adjustment accuracy.

[0017] 3. The support cylinders at the same height are fitted with clamps and internal support plates to connect the support cylinders of the same layer into an integral frame, so as to avoid tilting or displacement of individual support cylinders due to fluctuations in mine pressure. The outer edge of the clamps contacts the mine wall to form an auxiliary support surface, which disperses the load pressure of the main support structure and enhances the overall load-bearing capacity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial disassembly diagram of the present invention;

[0020] Figure 3 This is a cross-sectional structural diagram of a portion of the present invention;

[0021] In the attached diagram, 1 is the base; 11 is the support component; 2 is the support assembly; 21 is the support cylinder; 211 is the limiting plate; 22 is the support rod; 221 is the limiting ring; 3 is the adjusting plate; 31 is the adjusting hole; 32 is the mounting rod; 33 is the fixing rod; 4 is the adjusting rod; 41 is the adjusting block; 5 is the clamp; 6 is the inner support plate; and 61 is the mounting hole. Detailed Implementation

[0022] The directional terms mentioned in the following embodiments, such as "up", "down", "left", and "right", are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention of this utility model.

[0023] Example 1

[0024] like Figure 1-3 As shown, a safety pillar recovery support device includes a base 1 and a support assembly 2. An adjusting plate 3 is mounted on the base 1 via a support member 11. The horizontal cross-section of the support member 11 is cross-shaped. The adjusting plate 3 has four adjusting holes 31, each threadedly connected to an adjusting rod 4. The support assembly 2 includes a support cylinder 21 for sleeved on the adjusting rod 4 and a support rod 22 for inserted into the support cylinder 21. A limiting plate 211 is fixedly connected inside the support cylinder 21. The upper end of the adjusting rod 4 abuts against the limiting plate 211. A limiting ring 221 is fixedly connected to the support rod 22. 21 can be operated to abut against the end of the support cylinder 21 to provide support; the support height can be precisely adjusted by the threaded adjustment rod 4; the plug-in design of the support cylinder 21 and the support rod 22 allows for quick adjustment of the support length; the cooperation of the limiting plate 211 and the limiting ring 221 effectively prevents the support component 2 from slipping off, ensuring the stable transmission of support force during the mining process; the support rod 22 and the support cylinder 21 can be freely combined to adapt to the height difference of different support points caused by the unevenness of the mine roof, and coarse adjustment can be achieved. Afterwards, fine adjustment can be made by each adjustment rod 4 until each support component 2 abuts against the mine roof.

[0025] Specifically, the support rod 22 can be operated to abut against the limiting plate 211 to achieve the positioning of the support rod 22 on the support cylinder 21.

[0026] Specifically, an adjustment block 41 is fixedly connected to the bottom of the adjustment rod 4. The adjustment block 41 is hexagonal prism-shaped and matches a standard wrench. Operators can quickly rotate the adjustment rod 4 without special tools to achieve fine adjustment of the support height. At the same time, the hexagonal prism structure has better anti-slip properties than the cylindrical shape, preventing the hand from slipping during the adjustment process.

[0027] Specifically, each support cylinder 21 at the same height is fitted with a clamp 5 to connect the support cylinders 21 in the same layer into an integral frame, so as to prevent individual support cylinders 21 from tilting or displacing due to fluctuations in mine pressure. When the outer edge of the clamp 5 contacts the mine wall, it can also form an auxiliary support surface to disperse the load pressure of the main support structure.

[0028] Specifically, the inner side of the clamp 5 is provided with an inner support plate 6 at intervals. The inner support plate 6 abuts against the inner side of each support cylinder 21 at the same height, which can form multi-point support inside the clamp 5, ensuring that the clamp 5 and the support cylinder 21 fit tightly, and avoiding the phenomenon of jamming due to thermal expansion caused by continuous contact.

[0029] Specifically, the adjusting plate 3 is provided with a mounting rod 32, and the inner support plate 6 is provided with a mounting hole 61 in the middle to provide a precise positioning reference for the inner support plate 6. The inner support plate 6 is sleeved on the outside of the mounting rod 32 through the mounting hole 61.

[0030] Specifically, the clamp 5 is provided with a first threaded hole, and the inner support plate 6 is provided with a second threaded hole. The first and second threaded holes are threaded with set bolts for fastening the support cylinder 21, which can connect the clamp 5 and the inner support plate 6 to form a rigid fixation, improve the clamping force on the support cylinder 21, prevent structural loosening caused by mine vibration, and improve the overall impact resistance of the device.

[0031] Specifically, a fixing rod 33 is fixedly connected to the adjusting plate 3, and an installation rod 32 is inserted into the upper side of the fixing rod 33. It adopts the same connection form as the support cylinder 21 and the support rod 22, that is, openings for the fixing rod 33 to be inserted are provided at the upper and lower ends of the installation rod 32. The fixing rod 33 is provided with an annular limit. The height can be increased by adding a fixing rod 33 and an installation rod 32. It can be quickly disassembled and assembled. When it is necessary to adjust the height of the support layer, the installation rod 32 can be directly pulled out and replaced with a fixing rod 33 of a different height.

[0032] Specifically, there are four adjusting rods 4 arranged at equal intervals around the axis of the mounting rod 32, forming a stable quadrilateral support structure. Each adjusting rod 4 independently bears the load, avoiding structural eccentricity caused by single-point support. At the same time, the symmetrical layout makes the device more adaptable to irregular shapes of the mine pillar.

[0033] Example 2

[0034] Based on Example 1, a pin hole is horizontally provided on the adjusting block 41, into which a positioning pin can be inserted. When the adjusting rod 4 is adjusted to the target height, the positioning pin passes through the pin hole laterally and abuts against the bottom of the adjusting plate 3, forming a mechanical locking structure. This effectively prevents the adjusting rod 4 from rotating unexpectedly due to vibration or load changes, ensuring support stability. Alternatively, the positioning pin can be inserted and then rotated to rotate the adjusting rod 4 instead of using a standard wrench.

Claims

1. A support device for use in a security pillar recovery operation, characterised in that, The system includes a base (1) and a support assembly (2). An adjustment plate (3) is mounted on the base (1) via a support member (11). The adjustment plate (3) has multiple adjustment holes (31). An adjustment rod (4) is threaded into each adjustment hole (31). The support assembly (2) includes a support cylinder (21) for sleeved on the adjustment rod (4) and a support rod (22) for inserted into the support cylinder (21). A limit plate (211) is fixedly connected inside the support cylinder (21). The upper end of the adjustment rod (4) abuts against the limit plate (211). A limit ring (221) is fixedly connected to the support rod (22). The limit ring (221) is operable to abut against the end of the support cylinder (21).

2. A security pillar recovery support device according to claim 1 wherein, The support rod (22) is operable to abut against the limiting plate (211).

3. The support device for a security pillar according to claim 1, characterized in that, The bottom end of the adjusting rod (4) is fixedly connected to an adjusting block (41), which is a hexagonal prism.

4. A security pillar retraction system according to claim 3, characterised in that, The adjusting block (41) has a horizontally through-hole.

5. The support device for a security pillar according to claim 1, wherein Clamps (5) are fitted on each support cylinder (21) at the same height.

6. A security pillar retraction system according to claim 5, characterised in that, The inner side of the clamp (5) is provided with an inner support plate (6) at intervals, and the inner support plate (6) abuts against the inner side of each support cylinder (21) at the same height.

7. A security pillar retraction system according to claim 6, characterised in that, The adjusting plate (3) is provided with an installation rod (32), and the inner support plate (6) is provided with an installation hole (61) in the middle. The inner support plate (6) is sleeved on the outside of the installation rod (32) through the installation hole (61).

8. A security pillar retraction system according to claim 7, characterised in that, The clamp (5) is provided with a first threaded hole, and the inner support plate (6) is provided with a second threaded hole. The first threaded hole and the second threaded hole are threadedly connected with set bolts for fastening the support cylinder (21).

9. The security pillar retraction system of claim 7, wherein the support device comprises a plurality of support members. A fixing rod (33) is fixedly connected to the adjusting plate (3), and an installation rod (32) is inserted into the upper side of the fixing rod (33).

10. The support device for a security pillar according to claim 7, characterized in that, The adjusting rod (4) is evenly arranged in 3 or 4 positions around the mounting rod (32).

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